Saliva-ejector.



L. VAN ORDEN. SALIVA EIECTOR.

APPLICATION FILED OCT. 6.19I3.

Patented Sept. 28, 1915.

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' specification of Letters Patent.

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To all whom it may concern; I

Be it known that 1, Lessons VAN Unonn, a citizen of the United States, residing in the city and county of Alameda, State of California, have invented certain new and useful Improvements 1n da'hva-Ejgectors;

' and l do hereby declare thefollowing to be a clear, run, and exact description of the said invention, such as will enable others skilled in the art to which it most nearly appertains to make, use, and practise the same.

Among the objects sought to be accomplished are, to provide a guard for the suction end of dental siphons, that will be comfortable to the patient, and prevent the stoppage of the siphoning by the tongue,

mucous membrane or particles of gfilllngs and the like in the mouth or the patient.

The invention possesses other advantageous features, that with the foregoing will be set forth at len th in the following descriptiomwherein fshall outline in full that form of the invention selected for illustration in the drawings accompanying and forming part of the present specification.

The novelty of the invention will be included in the claims succeeding said specification. From this it is apparent that I do not restrict myself to the showing made by said drawings and specification; as I may adopt many variations within the spirit of this invention, as expressed in said claims.

In the drawings: Figure l is a side elevation of a dental siphon having a guard hood applied to the mouth piece thereof, in accordancewith this invention, the hood being shown in cross section, better to disclose its relation to the end of the siphon. Fig. 2 is an enlarged detail in side elevation of the endof the siphon mouthpiece, showing the guard hood applied thereto in the preferred manner, the hood being shown in vertical cross section. Fig. 3 is a front end view of the hood and the clip for attaching it to the siphon. Fig. d 18 an enlarged detail in side elevation of the end of the siphon tube, having a modified form of guard applied thereto, consistin of a spirally woundv wire cage of suitab e contour. Fig. 5 is a side elevation of a liquid trap for retaining obstructive matter that may pass through the siphon. This trap is adapted to be interposed between the siphon and the ejector. This figure is to be read 111 connection with Fig. t.

In dental operations involuntary secretions of saliva accumulate in the rnouth of the patient, to his discomfort, and to the annoyance of the operator; particularly when it is necessary to keep the portion of the mouth. under treatment, dry and asceptic. Siphoning is depended'upon to remove the accumulations of saliva, etc. a Great diiliculty' is experienced in keeping the siphon working freely, owine" to the tendencyof the contiguous membrane to draw into or over the openings in the end of the siphon. Application of this invention to the siphon, eliminates the above disadvantages, and insures a free flowing discharge through the siphon, from the inlet within the patients mouth to the outlet that is lower than the inlet, to cause the proper siphon action.

Uomtructiom-ln detail the preferred construction consists of the siphon 1, having the .hose connection 2, attachable to the suction side of the ejector Xyof any suitable type. The neck 3 of the siphon is bent to hang over the lower jaw of the patient, so that the suction end 4, will rest within the mouth behind the teeth, or in the jowl between the jaw and the cheek, or wherever saliva accumulates.

. The guard preferably consists of a hood 5, of soft, flexible rubber that will rest gently upon the sensitive flesh of the patient, with the least discomfort to him. To permit the hood better to adjust itself to the contour of the mouth, it is preferably swiveled to the end of the siphon, so as to have a limited lateral movement, for greater comfort. This swiveling is most simply accomplished by the wire clip 6, bent into a ring and inserted through a hole provided near the end of the siphon. The ends of the clip are bent back upon themselves to form the hooks 7-7. engaging a recess formed in the end of the hood, adjacent to the center opening 8, therethrough. The hood may be otherwise swiveled or attached to the end of the siphon, without departing from the spirit of this invention. The clip is allow-ed suificient play in the hole to perlPatented Sept. 28, 1%15.

guard the opening in the end of the siphon, or'thejholes or slots 9 9 therein, from becoming clogged by the tongue or mucous membrane, cotton or other obstructive-mat-' ter that maybe in the mouth of the patient. One of the primary advantages of this invention is that it permits a free and unobstructed end opening in the mouth piece 4 of the siphon, giving a direct discharge through the siphon. The lateral openings 9, serve the double function of ingress to the siphon, and serve to break the vacuum that would otherwise form-behind the end opening when closed by any obstruction.

Soft rubber (vulcanized) is best adapted for the substance of the hood, because of its,

softness yieldin to the shape and movements of the patients mouth, cleanliness and other obvious advantage.

The modified guard shown in Fig. 4, consists of. a. single piece of wire lrelica'lly wound to form an open cage like flexible stantially as foll hood, adapted to be fastened over the end of the siphon, to perform the same function as the other form of hood above described. The Wire should be non corrosive, light and springy to act as a flexible cushion for the end of the siphon, resting in the the patient.

The siphons may be variously forniedfto fit peculiar anatomical conditions of the ing the said suction force exerted by the ejector causes the accumulationof saliva to flow through the siphon, through the suction pipe, and

. away through the waste pipe X The hood guard performing its function as previously described.

Unless the patients mouth is too tender, the siphon operates better if a weight is mouth of 1 hung on the. suction pipe, this Weight causes the submerg'ence of the guarded end of the siphon, in the accumulated saliva in the patrents mouth, lIlSllllIlgll more continuous discharge. For this weight I prefer to use which the tube Z extends from near the bottom thereof, and is connected;- with the suction pipe. The outlet tube Z extends into the bottle and is connected with the sucthe bottle Z, with-the stopper Z, through tion side of the ejector. It is the function of this bottle to act as a trap, for retaining particles of fillings, broken tooth structure and the like, sucked up by the siphon. By trapping such obstructive matter, it is pre- 'vented from lodging in the ejector, or the Waste pipe and causing stoppage of the flow therethroughg'this trap also saves valuable gold particles in removing or grinding gold fillings. t

Having thus described this invention, What is claimed and desired to secure by Letters Patent is:

' 1. In a saliva ejector, a siphom a' flexible "guard attached to the suction end of said si hon. I p 4 I In a saliva ejector, a siphon, a guard swiveled to the suction end of said siphon.

3. In a saliva ejector, a siphon havin a laterally perforated suction end, a flexr 1e uard' attached to said siphon and inc-losperforated end. 4.:In' a saliva ejector, a siphon having a laterally perforated suction end, a clip extending through said perforation, and a flexible hood engagin said clip and inclosing the suction end 0 said siphon.

5. In a saliva ejector, a siphon having a laterally perforated suction end, a clip extending through said perforation, a hood of flexible materialhaving a center opening,

and a recess adjacent to said opening engaging. said clip..

In testimony whereof, I have hereunto set my hand this LEANDER VAN ORDEN.

Witnesses:

BALDWIN VALE, O. B. V ALE.

'95 18th day of September 

